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OEA体验 :常用功能1

一、摘要

       我下面写的是我在使用OEA中用到的功能,当然还有好多现在还没有用到,希望高手们多多指点指点。

OEA 源码:OEA框架 2.9 Pre-Alpha 源码公布可以到BloodyAngel 的博客中可以下到。

二、本文大纲

       a、摘要。

       b、数据过滤。

       c、托管属性。

       d、支持树型实体 。

二、数据过滤

数据查询是一个在平常不过的事,我们来看看OEA是怎么帮我们实现的。下面用一个简单的例子来说明,如我们要实现根据客户名称来查询,效果图如下:

image

要达到上面效果实现代码如下:

前台调用如下:

 1:  internal class ClientinfoConfig : EntityConfig<Clientinfo>
 2:  {
 3:      protected override void ConfigMeta()
 4:      {
 5:          base.ConfigMeta();
 6:      }
 7:      protected override void ConfigView()
 8:      {
 9:          base.ConfigView();
10:          View.UseWPFCommands("CLCS.WPF.ClientinfoSearchCommand");
11:      }
12:  }
13:   

具体代码如下:

 1:  using OEA.WPF.Command;
 2:  using OEA.MetaModel.Attributes;
 3:  using OEA.Module.WPF;
 4:  using OEA.Module.WPF.CommandAutoUI;
 5:  using OEA.MetaModel.View;
 6:   
 7:  namespace CLCS.WPF
 8:  {
 9:      [Command(Label = "过滤客户名称", UIAlgorithm = typeof(GenericItemAlgorithm<TextBoxButtonItemGenerator>))]
10:      public class ClientinfoSearchCommand : ListViewCommand
11:      {
12:          public override void Execute(ListObjectView view)
13:          {
14:              var txt = this.TryGetCustomParams<string>(CommandCustomParams.TextBox);
                 // 设置查询条件
15:              view.Filter = e => (e as Clientinfo).CcName.Contains(txt);
16:          }
17:      }
18:  }
19:   
20:   
21:   

 

二、托管属性(代码生成 OEAPropertyReference )

数据关联也是一个很平常的了,向下面的以前要写好多代码现在还不到10行就可以了。

image

在这需要用 小区表,和客户表  两个表

DemoEntity 类可以在OEA体验 :元数据编写中找到

下面的代码可以使用OEAPropertyReference 来生成

 1:  ///<summary>
 2:  ///描è述? : 客í户§信?息¢.
 3:  ///<see>类à库a对?应|的?数y据Y库a表í NT_Clcs_ClientInfo </see>
 4:  ///</summary>
 5:  [Serializable]
 6:  [RootEntity]
 7:  public class Clientinfo : DemoEntity
 8:  {
 9:      protected Clientinfo() { }
10:      public static readonly RefProperty<Village> VillageRefProperty =
11:          P<Clientinfo>.RegisterRef(e => e.Village, ReferenceType.Normal);
12:      public int VillageId
13:      {
14:          get { return this.GetRefId(VillageRefProperty); }
15:          set { this.SetRefId(VillageRefProperty, value); }
16:      }
17:      public Village Village
18:      {
19:          get { return this.GetRefEntity(VillageRefProperty); }
20:          set { this.SetRefEntity(VillageRefProperty, value); }
21:      }
22:      #endregion
23:  }
24:   

下面的是小区表的配置类

 1:  internal class VillageConfig : EntityConfig<Village>
 2:     {
 3:         protected override void ConfigMeta()
 4:         {
 5:             base.ConfigMeta();
 6:   
 7:             Meta.MapTable().HasColumns(
 8:             Village.ParentidProperty,
 9:             Village.CvNameProperty,
10:             Village.CvPinyiProperty,
11:             Village.CvTypeProperty,
12:             Village.CvHeatingplantProperty,
13:             Village.CvHscuProperty,
14:             Village.BustypeProperty,
15:             Village.ClientcountProperty
16:                 );
17:   
18:         }
19:         protected override void ConfigView()
20:         {
21:             base.ConfigView();
22:   
23:             View.HasTitle(Village.CvNameProperty).HasLabel("小?区?名?称?");
24:             View.Property(Village.CvNameProperty).HasLabel("小?区?名?称?").ShowIn(ShowInWhere.List | ShowInWhere.Lookup);
25:    }

自动生成数据库关联关系

image

 

三、支持树型实体(代码生成 OEATreeEntity )

       向小区下面还有楼栋和单元,我们看OEA如何实现

image

生成的代码如下:

 1:  #region 支§持?树÷型í实μ体?
 2:   
 3:          public static readonly Property<string> TreeCodeProperty = P<Village>.Register(e => e.TreeCode);
 4:          [Column]
 5:          public override string TreeCode
 6:          {
 7:              get { return GetProperty(TreeCodeProperty); }
 8:              set { SetProperty(TreeCodeProperty, value); }
 9:          }
10:   
11:          public static readonly Property<int?> TreePIdProperty = P<Village>.Register(e => e.TreePId);
12:          [Column]
13:          public override int? TreePId
14:          {
15:              get { return this.GetProperty(TreePIdProperty); }
16:              set { this.SetProperty(TreePIdProperty, value); }
17:          }
18:   
19:          public override bool SupportTree { get { return true; } }
20:   
21:          #endregion
22:  

自动生成数据库关联关系

image

是不是很简单

posted @ 2012-04-07 20:54  峡谷少爷  阅读(1464)  评论(3编辑  收藏  举报